arduino dht11 python

01_arduino_dht_python/arduino_dht11_simple/arduino_dht11_simple.ino

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+#include <DHT11.h>
+
+DHT11 dht11(2);
+
+void setup() {
+  Serial.begin(9600);
+}
+void loop() {
+  int temperature = dht11.readTemperature();
+
+  if (temperature != DHT11::ERROR_CHECKSUM && temperature != DHT11::ERROR_TIMEOUT){
+    Serial.print("DHT11:");
+    Serial.println(temperature);
+  } else{
+    Serial.print("ERROR:");
+    Serial.println(DHT11::getErrorString(temperature));
+  }
+  delay(2000);
+}

01_arduino_dht_python/main.py

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+import serial #pip intall pyserial
+import time
+from datetime import datetime
+
+ser = serial.Serial("COM3",9600)
+
+while True:
+    line = ser.readline().decode("utf-8").strip()
+
+    sensor_name, sensor_value = line.split(":")
+
+    now = datetime.now()
+    current_time = now.strftime("%H:%M:%S")
+    print(f"Čas: {current_time}")
+    print(f"Název senzoru: {sensor_name}")
+    print(f"Hodnota senzoru: {sensor_value}")
+    print("------------------")
+    time.sleep(1)

01_arduino_dht_python/plot.py

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+import serial
+import matplotlib.pyplot as plt
+
+ser = serial.Serial("COM3",9600)
+num_values = int(input("KOlik dat načíst?:"))
+values = []
+
+while True:
+    for i in range(num_values):
+        line = ser.readline().decode("utf-8").strip()
+        name, value = line.split(":")
+        values.append(int(value))
+        print(i)
+    plt.plot(values)
+    plt.show()
+    values = []
+    if input("q?").lower() == "q":
+        break

01_arduino_dht_python/prikazy.txt

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+#vytvoření venv
+python -m venv .venv
+
+#aktivace venv
+.venv\Scripts\activate
+
+#instalace knihoven
+pip install pyserial
+pip install matplotlib
+
+#výpis knihoven ve venv
+pip list